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9 FASTENING SYSTEMS
There are three types of fastening systems: Double "D", Quick release mechanism,
Micrometric fastener.
Below are the instructions for using these three systems.
9.1 DOUBLE "D" RETENTION SYSTEM
To fasten the helmet, pass the strap between the two rings
1
, pull the end of the strap
2
until the belt presses against your jaw and fasten the press-stud
3
, asshown in the diagram.
Check that the helmet is secure (see also the section entitled “Choice of appropriate helmet” in the
“Safety Warning” booklet).
To loosen the helmet, undo the press-stud by pulling the end of the strap and loosen the strap
through the rings, using the red tab, as shown in the diagram
4
.
1
2
3
4
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